Sparkify is a Berlin-based product from Onstruc UG, built to help electricians document their work with offline-capable software and NFC data integration from Wiha devices. The role is a full-stack ownership position for a production system consisting of PHP 8 / Symfony services and a Vue 3 web client used by electricians daily. You will maintain end-to-end ownership of the system so that API, data model, and UI work together; there is a small, active team including an infrastructure partner and the founder acting as CTO, supporting you as the system evolves. Responsibilities include owning the Symfony service fleet (API, authentication, payments, notifications, imaging, and PDF reporting) and the Vue 3 + Vuetify + TypeScript SPA (with Pinia and Vite). You will ship features across checkout, billing, workspace, admin, and documentation flows; build data import/export for new hardware partner integrations; ensure billing flows via Mollie subscriptions, webhooks, invoices, and SEPA mandates. You will run and improve production infrastructure (Hetzner servers, GitHub Actions CI, SSH deploys, Cloudflare DNS, Pulumi IaC) and monitor with Sentry, Datadog, and Grafana. You will work through a real backlog, addressing bugs, missing endpoints, data cleanups, hardening items, and pragmatic product improvements. Familiarity with Couchbase and Sync Gateway for mobile sync is helpful; our managed-service partner's Couchbase engineers support us, though prior Couchbase experience is not required. Requirements: at least 5 years of full-stack software experience with strong PHP/Symfony; co

Sparkify is a Berlin-based product from Onstruc UG, built to help electricians document their work with offline-capable software and NFC data integration from Wiha devices. The role is a full-stack ownership position for a production system consisting of PHP 8 / Symfony services and a Vue 3 web client used by electricians daily. You will maintain end-to-end ownership of the system so that API, data model, and UI work together; there is a small, active team including an infrastructure partner and the founder acting as CTO, supporting you as the system evolves. Responsibilities include owning the Symfony service fleet (API, authentication, payments, notifications, imaging, and PDF reporting) and the Vue 3 + Vuetify + TypeScript SPA (with Pinia and Vite). You will ship features across checkout, billing, workspace, admin, and documentation flows; build data import/export for new hardware partner integrations; ensure billing flows via Mollie subscriptions, webhooks, invoices, and SEPA mandates. You will run and improve production infrastructure (Hetzner servers, GitHub Actions CI, SSH deploys, Cloudflare DNS, Pulumi IaC) and monitor with Sentry, Datadog, and Grafana. You will work through a real backlog, addressing bugs, missing endpoints, data cleanups, hardening items, and pragmatic product improvements. Familiarity with Couchbase and Sync Gateway for mobile sync is helpful; our managed-service partner's Couchbase engineers support us, though prior Couchbase experience is not required. Requirements: at least 5 years of full-stack software experience with strong PHP/Symfony; co